Oil pump



March 1s, 1924. 1,487,539

c. W. CLEMENTZ OIL PUMP.

Filed Aug. 17. 1922 2 sheets-sheet 1 g nue 11 T o'o Cllrncew Clement@Hoarau March 18, 1924. 1,487,539

c. w. CLEMENTZ OIL PUMP Filed Aug-l 17A 192.2 2 sheets-sheet 2 ClarenceW mme n1; 5

tion engines under pressure.

@atented Mar. 18, 1924.

N l T CLARENCE W. CLMENTZ, OF JACKSONVILLE, FLORIDA, ASSIGNOB TOCRANKLFSS MTGINE COMPANY, 0F JACKSONVILLE, FLORIDA, .A CORFORATION 0FFLORIDA.

OIL PUMP.

Application :filed August 17, 1922. Serial No. 582,567.

To all whom it may concern:

Be it known that lI, CLARENCE W. CLM- nN'rz, a citizen of the UnitedStates, residing at Jacksonville, in the county of Duval and State ofFlorida, have invented certain new and useful Improvements in Oil Pumps,of which the `following is a specification.

My said invention relates to an oil pump for `use in feeding fuel tointernal combus- It is an object of the invention to provide a device ofthis character in which each cylinder may be fed by its individual pump,or by means of a common passa e one or, more `of the pumps may actconjointly to feed one or more of the cylinders of the engines.

A further object of the vinvention is to provide a pump of thischaracter which shall not be likely to get out of order, as it consistsof but few parts and these parts ,are simple and strong.

Referring to the drawings,

Figure 1 1s a plan of my invention,

Figure 2 a vertical section on line 2-2 of Figure 1, and

Fi re 3 is a vertical section on line 3- 3 of Figure 1. I

In the drawings, reference character 10 indicates a block having alongitudinal inlet passage 11 for li uid fuel.- This passage has anumber of ranches 12 normally shut oil from the inlet passage by checkvalves 13. For each passage there 1s a corresponding pump piston 14movable in a bushing 15 set in an opening in the block.' The piston isoperated b a shaft 16 bearing eccentrics 17, each of w ich actuates aconnec-ting rod 18 secured at its lower'end to a cross-head 19, whichcross-head carries the pump piston. A ridge 20 surrounds all the pumpsand provides a basin for catching any oil that may escape about thepistons. At the forward end of each assage 2 is a valve 21 normallyclosing t e passage, but adapted to be opened by the pressure of thefuel which thereupon escapes into an outlet passage 22 extendingsubstantially the length of the block and closed at one end by a screw23. From this common passage individual passages 24 lead outward to sray valves communicating with the cylin ers of the engine. A spray--valve suitable for this purpose is shown in my co-pending applicationof veven date.

herewith, but the pump can be used with other spray valves as will beobvious.

Each individual passage 24 is formed in a cylindrical plug 25, this plughaving lalso y the valve casin and has threaded connectionwith the b ook10. At its free end the plug has a nut 32 which holds the valve in lace.Between each pair of relief valves 1s a shut-oft vvalve 33 having acasing`34 threaded into the block 10, and the valve is held in place inthe casing by an inten nally threaded nut 35 bearing against a shoulderon the valve. Each valve has a transverse aperture 36 and it willbe seenthat by turning all the valves into the posi-i tion shown in Figure 3the passage 22 will be'common to yall the outlet passages so that eachpump will exert pressure on the spray valves at each of the cylinders,whereas if the shut-off valves are turned to the osition shown in Figure1 each pump wil act to feed only its own individual cylinder. All theshut-olf valves may be closed, if desired, or any one or combinationaccording to the exigencies of the particular situation.

Having fully described my what I claim as new and desire to secure byLetters Patent, is:

1. A fuel oil pump comprising a block, a plurality of pumps operatingtherein, a common inlet passage leading to said pumps a. common outletpassage receiving fue pum ed from said pumps, branch passages leadingfrom said common outlet passa e and a relief valve connected with eacbranch passage whereby the common outlet passage is interposed betweenthe pumps and the said branch passage, substantial y as set forth.

2. A fuel oil pump comprising a plurality of pumps, a common passagereceiving oil therefrom, branch passages leading from said commonpassage, and means acting at intervals along said common passage forinvention,

selectively determining the action of the pumps on the fuel in saidpassages, substantially as set forth.

3. Avfueloil pump comprising a plurality of pumps, a common. passagereceiving oil therefrom, branch passages leadin from said commonpassage, and Shut-o valves between said branch paages and adapted tocause each branch passage to receive fuel from its individual pump only,substantially as set forth.

4. A fuel oil pump comprising 'a block, longitudinal inlet and outletpassages therein, transverse passages leading from said inlet passage tosaid outlet passage, valvesv at the junction points between transversepas-` meme@ sages-and the inlet and outlet passages, a pump between eachpair of said valves and connected with a transverse passage and meansoperating at intervals along the outlet passage for selectiveldetermining the action of the pumps on t e fuel discharged into saidoutlet passage, substantially as set forth.

In witness whereof, I have hereunto Set mv hand and seal atJacksonville, Florida,

lthuis 12th day of August, A. D. nineteen hundred and twentytwo.

CLARENCE W. CLEMENTZ. Witn:

J. L. Doss, JR., GLADYS COX.

